stac-extensions / perspective-imagery

Describes perspective imagery collected by photogrammetric or non-photogrammetric cameras
Apache License 2.0
14 stars 2 forks source link

Support of cropped panoramas #10

Open PanierAvide opened 1 year ago

PanierAvide commented 1 year ago

Hello,

We are working in the Panoramax / GeoVisio initiative on supporting cropped 360° panorama pictures (discussion started here). These are commonly defined through 6 variables :

With current state of perspective imagery extension, we can define :

We can't however define a vertical cropped range, nor define horizontal/vertical offset compared to full panorama image center.

Do you think this would make sense to extend this extension definition to handle this kind of cases ? May we adopt a scheme like :

The name visible_area might not be the best, a name suggesting "you'll only find a subset of pixels really defined in downloadable assets, which is at this space in pixel matrix" would be better.

Best regards.